28080990

Names of 28080990

• Cardinal: 28080990 can be written as Twenty-eight million, eighty thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 2.808099 × 10⁷

Factors of 28080990

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 99

Divisors of 28080990

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 29 30 35 42 45 53 58 63 70 87 90 105 106 126 145 159 174 203 210 261 265 290 315 318 371 406 435 477 522 530 609 630 742 795 841 870 954 1015 1113 1218 1305 1537 1590 1682 1827 1855 2030 2226 2385 2523 2610 3045 3074 3339 3654 3710 4205 4611 4770 5046 5565 5887 6090 6678 7569 7685 8410 9135 9222 10759 11130 11774 12615 13833 15138 15370 16695 17661 18270 21518 23055 25230 27666 29435 32277 33390 35322 37845 44573 46110 52983 53795 58870 64554 69165 75690 88305 89146 96831 105966 107590 133719 138330 161385 176610 193662 222865 264915 267438 312011 322770 401157 445730 484155 529830 624022 668595 802314 936033 968310 1337190 1560055 1872066 2005785 2808099 3120110 4011570 4680165 5616198 9360330 14040495 28080990
• Sum of all divisors σ(n): 88047648
• Sum of proper divisors (its aliquot sum) s(n): 59966658
• 28080990 is an abundant number, because the sum of its proper divisors (59966658) is greater than itself. Its abundance is 31885668

Bases of 28080990

• Binary: 1101011000111101101011110₂
• Hexadecimal: 0x1AC7B5E
• Base-36: GPVFI

Squares and roots of 28080990

• 28080990 squared (28080990²) is 788541999380100
• 28080990 cubed (28080990³) is 22143039999172594299000
• The square root of 28080990 is 5299.1499318287
• The cube root of 28080990 is 303.9513931403

Scales and comparisons

• 28,080,990 seconds is equal to 46 weeks, 3 days, 16 minutes, 30 seconds.
• To count from 1 to 28,080,990 would take you about seventeen weeks!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 28080990 cubic inches would be around 25.3 feet tall.

Recreational maths with 28080990

• 28080990 backwards is 09908082
• The number of decimal digits it has is: 8
• The sum of 28080990's digits is 36
• More coming soon!